Format with nixfmt

We've once again gotten out-of-date with nixfmt. I suggest we add a
pre-commit hook to run this for us and work on setting up CI to check
that each commit complies ASAP

Change-Id: Idd90236b8ac85e1407a035ef00aaee683a48dd66
Reviewed-on: https://git.clicks.codes/c/Chimera/NixFiles/+/397
Tested-by: Skyler Grey <minion@clicks.codes>
Reviewed-by: Samuel Shuert <coded@clicks.codes>
5 files changed